One vertex per element, one color per generator, with an edge from x to x·s.
(2,4)(5,6,10,7)(8,11,15,13)(9,14,17,12)(16,19,20,18)(21,22,25,29,26,30,23,27)(24,28,32,35,33,36,31,34)(5,7,10,6)(8,11,15,13)(9,12,17,14)(16,19,20,18)(22,27)(23,25)(24,32)(29,30)(31,33)(34,35)(1,2,3,4)(5,8,10,15)(6,11,7,13)(9,16,17,20)(12,18,14,19)(21,23,26,25)(22,27,30,29)(24,31,33,32)(28,34,36,35)(8,15)(11,13)(16,20)(18,19)(21,24,23,31,26,33,25,32)(22,28,27,34,30,36,29,35)(5,9,10,17)(6,12,7,14)(8,16,15,20)(11,18,13,19)(21,23,26,25)(22,29,30,27)(24,31,33,32)(28,35,36,34)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.